Calculate variance and co-efficient of variation from thefollowing data:Class Interval : 12-1616-20 20-2424-28 28-32 32-36Frequency:2818106.5

Class Frequency 12 - 16 2 16 - 20 8 20 - 24 18 24 - 28 10 28 - 32 6 32 - 36 5

Answered: Calculate variance and co-efficient of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The owner of Showtime Movie Theaters, Inc., would lke to predict weekly gross revenue as a function of advertising expenditures Historical data for a sample of eight wecks follow Weekly Gross Revenue ($1,000s) Television Advertising ($1,000s) Newspaper Advertising ($1,000s) 96 5.0 1.5 90 2.0 2.0 95 4.0 1.5 92 2.5 2.5 95 3.0 3.3 94 3.5 2.3 94 2.5 4.2 94 3.0 2.5 The owner then used multiple regression analysis to predict gross revenue (y), in thousands of dollars, as a function of television advertising (x), in thousands of dolars, and newspaper advertising (x,), in thousands of dollars. The estimated regression equation was = 83.2 + 2.29x, + 1.30x. (a) What is the gross revenue (in dollars) expected for a week when $5,000 is spent on television advertising (x5) and $1,500 is spent on newspaper advertising (, 1.5)? (Round your answer to the nearest dollar.) $06600 (b) Provide a 95% confidence interval (in dolars) for the mean revenue of all weeks with the expenditures listed in part (a).…
Part 2. Complete the following statements. A) The cumulative enrolment is the enrolment of the intervals smaller than the interval in question or equal to the latter. The graph of cumulative enrolment is represented by a function in B) The average, median and mode are three measures of of the C) The term refers to any data that deviates disproportionately from others. D) When the residual values are zero, then the correlation is called
The figure below shows relative frequency histogram for 50 employees working in a small construction company classified according to their years of experience. While x-axis represents the class midpoints of experience years, y-axis represents relative frequency for the employees. The value of variance for the years of :experience is between Relative Frequency for Employees 0.45 04 0.35 0.3 0.25 0.2 0.15 0.1 0.05 7.5 Relative Frequency Chart 13.5 19.5 Class Midpoints of Experience Years 25.5 32-34 O 40-42 O 12-14 O 20-22 O 52-54 O
Please help with the areas marked with an X To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 19 29 16 25 27 15 23 32 19 21 28 18 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use . Sum of Squares, Treatment X Sum of Squares, Error X Mean Squares, Treatment X Mean Squares, Error X Compute the values below (to decimals, if necessary). Calculate the value of the test statistic (to decimals)_______x_________. b. At the level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers and . Calculate Fisher's LSD Value (to decimals)______X______
A store manager kept track of the number of newspapers sold each week over a seven-week period. The results were as follows: 88, 71, 201, 113, 269, 248, 250 Find the 5-number summary(Q1, Q2, Q3) min and maximum for the data. Is the data discrete or continuous?
The following table gives the annual revenue for the Microsoft Corp. in billions of dollars for a ten-year period. Year Microsoft 2007 2008 51 60 2009 2010 58 62 2011 2012 70 73 2013 2014 2015 2016 78 86 94 85 Construct and upload a boxplot for the Microsoft data. Be sure to label all the important numbers for the box plot.
For major league baseball teams, is there a relationship between player payrolls and gate money? Here are data for each of the American League teams for the year 2000. The variable x denotes the 2000 player payroll (in millions of dollars), and the variable y denotes the mean attendance (in thousands of fans) for the 81 home games that year. The data are plotted in the Figure 1 scatter plot. Also given is the product of the player payroll and the mean attendance for each of the fourteen teams. (These products, written in the column labelled "xy", may aid in calculations.) Anaheim Baltimore Boston Chicago White Sox Cleveland Detroit Kansas City Minnesota Mean Player payroll, x attendance, y (in $1,000,000s) thousands) New York Yankees Oakland Seattle Tampa Bay Texas Toronto Send data to calculator 59.2 80.5 97.0 42.3 90.5 68.6 31.8 23.5 114.3 43.0 69.9 65.2 72.7 66.8 25.56 40.74 31.98 24.07 42.72 31.23 20.74 13.09 39.88 21.36 38.89 18.27 34.57 22.47 xy x 1513.152 3279.57 3102.06…
How do I interpret the 6 characteristics whith the data given? Column Mean Median Range Variance Std. dev. 1 - Cholesterol 253.92857 268 218 2276.291 47.710492
What do the box plots tell you about the variability of the data? a. A has greater variability because its median and mean are greater than B b. B has greater variability because its range and IQR are greater tha c. B has greater variability because its median & mean are greater than A d. A has greater variability because its range & IQR are greater than B
2.7 - a. Write a few short sentences that compare the center and the spread for each dot plot. b. Based on this sample, cereals from which manufacturer tend to have no variation in calories?
Please anwser using SPSS!
Are there any mild outliers in the college students data? Show all work. Construct and label a modified boxplot for the college students data.

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Calculate variance and co-efficient of variation from the following data: Class Interval : 12-16 16-20 20-24 24-28 28-32 32-36 Frequency: 8 18 10 6 5